ISPs countering Vumatel downtime

Vumatel completed installing Fibre now in my area and i will remain with the same ISP who provided me with Fixed Wireless Broadband for over 4yrs now with excellent up time. They have however advised me to keep my current equipment which is a dish on the roof linked to a radio tower, when I transfer to Fibre in order to have a back u should Vumatel have down time. All I have to do is to contact them and request to transfer my link to the old system. Once the Fibre is on again, they will transfer you back, all done at no extra cost. I think some ISPs became smart for real lol.